It has total 3 magnetic surfaces i.e., the top and bottom each with 90 degree V angle and the end surface is opposite to the switch. All the 3 magnetic surface are accurately ground and care has been taken as such to be to used in dry as well as wet machining operations.
The permanent magnet is housed in such a way that all the three magnetic surfaces are activated simultaneously during 'ON' position of the knob. The High power magnetized surfaces hold any ferrous surface.
From quality aspect the accuracy for flatness, parallelism and squareness is within 5 microns. All Jafuji Magnetic V blocks are supplied along with calibration certificate traceable to national standards.